/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
****************************************************************************/
-
/*
* Terminal setup routines common to termcap and terminfo:
*
*/
#include <curses.priv.h>
-#include <tic.h> /* for MAX_NAME_SIZE */
+#include <tic.h> /* for MAX_NAME_SIZE */
#include <term_entry.h>
#if defined(SVR4_TERMIO) && !defined(_POSIX_SOURCE)
#define _POSIX_SOURCE
#endif
-#include <term.h> /* lines, columns, cur_term */
+#include <term.h> /* lines, columns, cur_term */
-MODULE_ID("$Id: lib_setup.c,v 1.55 1999/08/21 23:06:08 tom Exp $")
+MODULE_ID("$Id: lib_setup.c,v 1.59 2000/02/13 01:01:26 tom Exp $")
/****************************************************************************
*
static void do_prototype(void);
-void use_env(bool f)
+void
+use_env(bool f)
{
- _use_env = f;
+ _use_env = f;
}
-int LINES, COLS, TABSIZE;
+int LINES = 0, COLS = 0, TABSIZE = 0;
-static void _nc_get_screensize(int *linep, int *colp)
+static void
+_nc_get_screensize(int *linep, int *colp)
/* Obtain lines/columns values from the environment and/or terminfo entry */
{
- /* figure out the size of the screen */
- T(("screen size: terminfo lines = %d columns = %d", lines, columns));
+ /* figure out the size of the screen */
+ T(("screen size: terminfo lines = %d columns = %d", lines, columns));
- if (!_use_env)
- {
- *linep = (int)lines;
- *colp = (int)columns;
- }
- else /* usually want to query LINES and COLUMNS from environment */
- {
- int value;
+ if (!_use_env) {
+ *linep = (int) lines;
+ *colp = (int) columns;
+ } else { /* usually want to query LINES and COLUMNS from environment */
+ int value;
- *linep = *colp = 0;
+ *linep = *colp = 0;
- /* first, look for environment variables */
- if ((value = _nc_getenv_num("LINES")) > 0) {
- *linep = value;
- }
- if ((value = _nc_getenv_num("COLUMNS")) > 0) {
- *colp = value;
- }
- T(("screen size: environment LINES = %d COLUMNS = %d",*linep,*colp));
+ /* first, look for environment variables */
+ if ((value = _nc_getenv_num("LINES")) > 0) {
+ *linep = value;
+ }
+ if ((value = _nc_getenv_num("COLUMNS")) > 0) {
+ *colp = value;
+ }
+ T(("screen size: environment LINES = %d COLUMNS = %d", *linep, *colp));
#ifdef __EMX__
- if (*linep <= 0 || *colp <= 0)
- {
- int screendata[2];
- _scrsize(screendata);
- *colp = screendata[0];
- *linep = screendata[1];
- T(("EMX screen size: environment LINES = %d COLUMNS = %d",*linep,*colp));
- }
+ if (*linep <= 0 || *colp <= 0) {
+ int screendata[2];
+ _scrsize(screendata);
+ *colp = screendata[0];
+ *linep = screendata[1];
+ T(("EMX screen size: environment LINES = %d COLUMNS = %d",
+ *linep, *colp));
+ }
#endif
#if HAVE_SIZECHANGE
- /* if that didn't work, maybe we can try asking the OS */
- if (*linep <= 0 || *colp <= 0)
- {
- if (isatty(cur_term->Filedes))
- {
- STRUCT_WINSIZE size;
-
- errno = 0;
- do {
- if (ioctl(cur_term->Filedes, IOCTL_WINSIZE, &size) < 0
- && errno != EINTR)
- goto failure;
- } while
- (errno == EINTR);
-
- /*
- * Solaris lets users override either dimension with an
- * environment variable.
- */
- if (*linep <= 0)
- *linep = WINSIZE_ROWS(size);
- if (*colp <= 0)
- *colp = WINSIZE_COLS(size);
- }
- /* FALLTHRU */
- failure:;
+ /* if that didn't work, maybe we can try asking the OS */
+ if (*linep <= 0 || *colp <= 0) {
+ if (isatty(cur_term->Filedes)) {
+ STRUCT_WINSIZE size;
+
+ errno = 0;
+ do {
+ if (ioctl(cur_term->Filedes, IOCTL_WINSIZE, &size) < 0
+ && errno != EINTR)
+ goto failure;
+ } while
+ (errno == EINTR);
+
+ /*
+ * Solaris lets users override either dimension with an
+ * environment variable.
+ */
+ if (*linep <= 0)
+ *linep = WINSIZE_ROWS(size);
+ if (*colp <= 0)
+ *colp = WINSIZE_COLS(size);
}
+ /* FALLTHRU */
+ failure:;
+ }
#endif /* HAVE_SIZECHANGE */
- /* if we can't get dynamic info about the size, use static */
- if (*linep <= 0 || *colp <= 0)
- if (lines > 0 && columns > 0)
- {
- *linep = (int)lines;
- *colp = (int)columns;
- }
-
- /* the ultimate fallback, assume fixed 24x80 size */
- if (*linep <= 0 || *colp <= 0)
- {
- *linep = 24;
- *colp = 80;
+ /* if we can't get dynamic info about the size, use static */
+ if (*linep <= 0 || *colp <= 0)
+ if (lines > 0 && columns > 0) {
+ *linep = (int) lines;
+ *colp = (int) columns;
}
- /*
- * Put the derived values back in the screen-size caps, so
- * tigetnum() and tgetnum() will do the right thing.
- */
- lines = (short)(*linep);
- columns = (short)(*colp);
+ /* the ultimate fallback, assume fixed 24x80 size */
+ if (*linep <= 0 || *colp <= 0) {
+ *linep = 24;
+ *colp = 80;
}
- T(("screen size is %dx%d", *linep, *colp));
+ /*
+ * Put the derived values back in the screen-size caps, so
+ * tigetnum() and tgetnum() will do the right thing.
+ */
+ lines = (short) (*linep);
+ columns = (short) (*colp);
+ }
+
+ T(("screen size is %dx%d", *linep, *colp));
- if (init_tabs != -1)
- TABSIZE = (int)init_tabs;
- else
- TABSIZE = 8;
- T(("TABSIZE = %d", TABSIZE));
+ if (VALID_NUMERIC(init_tabs))
+ TABSIZE = (int) init_tabs;
+ else
+ TABSIZE = 8;
+ T(("TABSIZE = %d", TABSIZE));
}
#if USE_SIZECHANGE
-void _nc_update_screensize(void)
+void
+_nc_update_screensize(void)
{
- int my_lines, my_cols;
+ int my_lines, my_cols;
- _nc_get_screensize(&my_lines, &my_cols);
- if (SP != 0 && SP->_resize != 0)
- SP->_resize(my_lines, my_cols);
+ _nc_get_screensize(&my_lines, &my_cols);
+ if (SP != 0 && SP->_resize != 0)
+ SP->_resize(my_lines, my_cols);
}
#endif
}
#if USE_DATABASE
-static int grab_entry(const char *const tn, TERMTYPE *const tp)
+static int
+grab_entry(const char *const tn, TERMTYPE * const tp)
/* return 1 if entry found, 0 if not found, -1 if database not accessible */
{
- char filename[PATH_MAX];
- int status;
+ char filename[PATH_MAX];
+ int status;
- /*
- * $TERM shouldn't contain pathname delimiters.
- */
- if (strchr(tn, '/'))
- return 0;
+ /*
+ * $TERM shouldn't contain pathname delimiters.
+ */
+ if (strchr(tn, '/'))
+ return 0;
- if ((status = _nc_read_entry(tn, filename, tp)) != 1) {
+ if ((status = _nc_read_entry(tn, filename, tp)) != 1) {
#ifndef PURE_TERMINFO
- /*
- * Try falling back on the termcap file.
- * Note: allowing this call links the entire terminfo/termcap
- * compiler into the startup code. It's preferable to build a
- * real terminfo database and use that.
- */
- status = _nc_read_termcap_entry(tn, tp);
-#endif /* PURE_TERMINFO */
-
- }
-
/*
- * If we have an entry, force all of the cancelled strings to null
- * pointers so we don't have to test them in the rest of the library.
- * (The terminfo compiler bypasses this logic, since it must know if
- * a string is cancelled, for merging entries).
+ * Try falling back on the termcap file.
+ * Note: allowing this call links the entire terminfo/termcap
+ * compiler into the startup code. It's preferable to build a
+ * real terminfo database and use that.
*/
- if (status == 1) {
- int n;
- for_each_boolean(n,tp)
- if (!VALID_BOOLEAN(tp->Booleans[n]))
- tp->Booleans[n] = FALSE;
- for_each_string(n,tp)
- if (tp->Strings[n] == CANCELLED_STRING)
- tp->Strings[n] = ABSENT_STRING;
- }
- return(status);
+ status = _nc_read_termcap_entry(tn, tp);
+#endif /* PURE_TERMINFO */
+
+ }
+
+ /*
+ * If we have an entry, force all of the cancelled strings to null
+ * pointers so we don't have to test them in the rest of the library.
+ * (The terminfo compiler bypasses this logic, since it must know if
+ * a string is cancelled, for merging entries).
+ */
+ if (status == 1) {
+ int n;
+ for_each_boolean(n, tp)
+ if (!VALID_BOOLEAN(tp->Booleans[n]))
+ tp->Booleans[n] = FALSE;
+ for_each_string(n, tp)
+ if (tp->Strings[n] == CANCELLED_STRING)
+ tp->Strings[n] = ABSENT_STRING;
+ }
+ return (status);
}
#endif
-char ttytype[NAMESIZE];
+char ttytype[NAMESIZE] = "";
/*
* setupterm(termname, Filedes, errret)
*
*/
-int setupterm(NCURSES_CONST char *tname, int Filedes, int *errret)
+int
+setupterm(NCURSES_CONST char *tname, int Filedes, int *errret)
{
-struct term *term_ptr;
-int status;
+ struct term *term_ptr;
+ int status;
- T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, errret));
+ T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, errret));
- if (tname == 0) {
- tname = getenv("TERM");
- if (tname == 0 || *tname == '\0') {
- ret_error0(-1, "TERM environment variable not set.\n");
- }
- }
- if (strlen(tname) > MAX_NAME_SIZE) {
- ret_error(-1, "TERM environment must be <= %d characters.\n",
- MAX_NAME_SIZE);
+ if (tname == 0) {
+ tname = getenv("TERM");
+ if (tname == 0 || *tname == '\0') {
+ ret_error0(-1, "TERM environment variable not set.\n");
}
+ }
+ if (strlen(tname) > MAX_NAME_SIZE) {
+ ret_error(-1, "TERM environment must be <= %d characters.\n",
+ MAX_NAME_SIZE);
+ }
- T(("your terminal name is %s", tname));
+ T(("your terminal name is %s", tname));
- term_ptr = typeCalloc(TERMINAL, 1);
+ term_ptr = typeCalloc(TERMINAL, 1);
- if (term_ptr == 0) {
- ret_error0(-1, "Not enough memory to create terminal structure.\n") ;
- }
+ if (term_ptr == 0) {
+ ret_error0(-1, "Not enough memory to create terminal structure.\n");
+ }
#if USE_DATABASE
- status = grab_entry(tname, &term_ptr->type);
+ status = grab_entry(tname, &term_ptr->type);
#else
- status = 0;
+ status = 0;
#endif
- /* try fallback list if entry on disk */
- if (status != 1)
- {
- const TERMTYPE *fallback = _nc_fallback(tname);
-
- if (fallback)
- {
- term_ptr->type = *fallback;
- status = 1;
- }
- }
-
- if (status == -1)
- {
- ret_error0(-1, "terminals database is inaccessible\n");
- }
- else if (status == 0)
- {
- ret_error(0, "'%s': unknown terminal type.\n", tname);
- }
-
- /*
- * Improve on SVr4 curses. If an application mixes curses and termcap
- * calls, it may call both initscr and tgetent. This is not really a
- * good thing to do, but can happen if someone tries using ncurses with
- * the readline library. The problem we are fixing is that when
- * tgetent calls setupterm, the resulting Ottyb struct in cur_term is
- * zeroed. A subsequent call to endwin uses the zeroed terminal
- * settings rather than the ones saved in initscr. So we check if
- * cur_term appears to contain terminal settings for the same output
- * file as our current call - and copy those terminal settings. (SVr4
- * curses does not do this, however applications that are working
- * around the problem will still work properly with this feature).
- */
- if (cur_term != 0) {
- if (cur_term->Filedes == Filedes)
- term_ptr->Ottyb = cur_term->Ottyb;
- }
-
- set_curterm(term_ptr);
-
- if (command_character && getenv("CC"))
- do_prototype();
-
- strncpy(ttytype, cur_term->type.term_names, NAMESIZE - 1);
- ttytype[NAMESIZE - 1] = '\0';
-
- /*
- * Allow output redirection. This is what SVr3 does.
- * If stdout is directed to a file, screen updates go
- * to standard error.
- */
- if (Filedes == STDOUT_FILENO && !isatty(Filedes))
- Filedes = STDERR_FILENO;
- cur_term->Filedes = Filedes;
-
- _nc_get_screensize(&LINES, &COLS);
-
- if (errret)
- *errret = 1;
+ /* try fallback list if entry on disk */
+ if (status != 1) {
+ const TERMTYPE *fallback = _nc_fallback(tname);
- T((T_CREATE("screen %s %dx%d"), tname, LINES, COLS));
-
- if (generic_type) {
- ret_error(0, "'%s': I need something more specific.\n", tname);
- }
- if (hard_copy) {
- ret_error(1, "'%s': I can't handle hardcopy terminals.\n", tname);
+ if (fallback) {
+ term_ptr->type = *fallback;
+ status = 1;
}
- returnCode(OK);
+ }
+
+ if (status == -1) {
+ ret_error0(-1, "terminals database is inaccessible\n");
+ } else if (status == 0) {
+ ret_error(0, "'%s': unknown terminal type.\n", tname);
+ }
+
+ /*
+ * Improve on SVr4 curses. If an application mixes curses and termcap
+ * calls, it may call both initscr and tgetent. This is not really a
+ * good thing to do, but can happen if someone tries using ncurses with
+ * the readline library. The problem we are fixing is that when
+ * tgetent calls setupterm, the resulting Ottyb struct in cur_term is
+ * zeroed. A subsequent call to endwin uses the zeroed terminal
+ * settings rather than the ones saved in initscr. So we check if
+ * cur_term appears to contain terminal settings for the same output
+ * file as our current call - and copy those terminal settings. (SVr4
+ * curses does not do this, however applications that are working
+ * around the problem will still work properly with this feature).
+ */
+ if (cur_term != 0) {
+ if (cur_term->Filedes == Filedes)
+ term_ptr->Ottyb = cur_term->Ottyb;
+ }
+
+ set_curterm(term_ptr);
+
+ if (command_character && getenv("CC"))
+ do_prototype();
+
+ strncpy(ttytype, cur_term->type.term_names, NAMESIZE - 1);
+ ttytype[NAMESIZE - 1] = '\0';
+
+ /*
+ * Allow output redirection. This is what SVr3 does.
+ * If stdout is directed to a file, screen updates go
+ * to standard error.
+ */
+ if (Filedes == STDOUT_FILENO && !isatty(Filedes))
+ Filedes = STDERR_FILENO;
+ cur_term->Filedes = Filedes;
+
+ _nc_get_screensize(&LINES, &COLS);
+
+ if (errret)
+ *errret = 1;
+
+ T((T_CREATE("screen %s %dx%d"), tname, LINES, COLS));
+
+ if (generic_type) {
+ ret_error(0, "'%s': I need something more specific.\n", tname);
+ }
+ if (hard_copy) {
+ ret_error(1, "'%s': I can't handle hardcopy terminals.\n", tname);
+ }
+ returnCode(OK);
}
/*
static void
do_prototype(void)
{
-int i;
-char CC;
-char proto;
-char *tmp;
-
- tmp = getenv("CC");
- CC = *tmp;
- proto = *command_character;
-
- for_each_string(i, &(cur_term->type)) {
- for (tmp = cur_term->type.Strings[i]; *tmp; tmp++) {
- if (*tmp == proto)
- *tmp = CC;
- }
+ int i;
+ char CC;
+ char proto;
+ char *tmp;
+
+ tmp = getenv("CC");
+ CC = *tmp;
+ proto = *command_character;
+
+ for_each_string(i, &(cur_term->type)) {
+ for (tmp = cur_term->type.Strings[i]; *tmp; tmp++) {
+ if (*tmp == proto)
+ *tmp = CC;
}
+ }
}
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